The invention discloses a flow splitting exhaust pipe of an automobile. The flow splitting exhaust pipe comprises an exhaust pipe body, pipe sleeves, a silencer, a cooler, a liquid filter, a water outlet pipe, a connecting short pipe, a fixing pipe, an exhaust main pipe, a filtering screen, a flow splitting cavity, a first exhaust branch pipe, a second exhaust branch pipe, bafflers, a first three-way catalytic converter, a second three-way catalytic converter, a first flow splitting pipe, flow splitting holes and a second flow splitting pipe. The flow splitting exhaust pipe of the automobile is characterized in that the silencer is arranged on the exhaust pipe body; the pipe sleeves are arranged on the two sides of the silencer; the silencer is connected with the exhaust pipe body through the pipe sleeves; the cooler is arranged on one side of the exhaust pipe body and is fixedly connected with the exhaust pipe body; and the water outlet pipe is arranged at the lower end of the cooler and is fixedly connected with the cooler. The flow splitting exhaust pipe of the automobile has the beneficial effects of being simple in structure, good in heat dissipating effect and good in noise prevention effect.